Home / 6,666.12-9,990.78-3,380.04

Finding the Fourth Proportional to 6,666.12, 9,990.78 and 3,380.04

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Solution

The fourth proportional to 6,666.12, 9,990.78 and 3,380.04 is: 5,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,666.12 : 9,990.78 = 3,380.04 : x
  2. Step 2: Convert to fraction form
    6,666.12/9,990.78 = 3,380.04/x
  3. Step 3: Cross multiply
    6,666.12x = 9,990.78 × 3,380.04
  4. Step 4: Simplify right side
    6,666.12x = 33,769,236.03
  5. Step 5: Solve for x
    x = 33,769,236.03/6,666.12
  6. Step 6: Final answer
    x = 5,065.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.